scholarly journals Successful Pregnancy following Mixed Double Embryo Transfer in a Patient with Variable Window of Implantation

2018 ◽  
Vol 2018 ◽  
pp. 1-4
Author(s):  
Georgi Stamenov Stamenov ◽  
Dimitar Angelov Parvanov ◽  
Todor Angelov Chaushev
Keyword(s):  
Menstrual Cycle ◽  
Embryo Transfer ◽  
Embryo Implantation ◽  
Recurrent Implantation Failure ◽  
Menstrual Cycles ◽  
Variable Window ◽  
Unique Approach ◽  
Midluteal Phase ◽  
Double Embryo Transfer

The process of embryo implantation is carried out during the receptive stage of the endometrium in the midluteal phase of the menstrual cycle, known as window of implantation (WOI). It has been assumed that the WOI is not a constant variable in all women and the determination of its displacement is of crucial importance, especially for patients with recurrent implantation failure (RIF). Furthermore, in rare cases it could have different duration and position in the menstrual cycle even in the same woman but during different periods. Here, we report a 37-year-old woman with RIF, who was previously classified as idiopathic but has now been diagnosed as having a variable WOI. This interpretation was done after the performance of immunohistochemical and histomorphological analyses of endometrial biopsies taken in the midluteal phase during three sequential menstrual cycles. In order to solve the problem with pinpointing a variable WOI, a specific type of embryo transfer, called mixed double embryo transfer (MDET), was done where one Day 3 and one Day 5 good quality embryos were transferred simultaneously 7 days after ovulation. A viable single pregnancy was confirmed by ultrasound scan and a healthy girl was born. This case showed a unique approach in overcoming the problem in RIF patients with variable WOI.

scholarly journals MicroRNA signatures in plasma and plasma exosome during window of implantation for implantation failure following in-vitro fertilization and embryo transfer

2021 ◽  
Vol 19 (1) ◽  
Author(s):  
Hong Zeng ◽  
Yu Fu ◽  
Lang Shen ◽  
Song Quan
Keyword(s):  
In Vitro Fertilization ◽  
Embryo Transfer ◽  
Embryo Implantation ◽  
Differentially Expressed ◽  
Implantation Failure ◽  
Recurrent Implantation Failure ◽  
Vitro Fertilization ◽  
Pathway Enrichment ◽  
Consistent Direction

Abstract Background MicroRNAs (miRNAs) are small, non-coding RNAs that are dysregulated in many diseases and can act as biomarkers. Although well-studied in cancer, the role of miRNAs in embryo implantation is poorly understood. Approximately 70% of embryos fail to implant following in-vitro fertilization and embryo transfer, 10% of patients experienced recurrent implantation failure. However, there are no well-established biomarkers that can predict implantation failure. Our purpose is to investigate distinct miRNA profiles in plasma and plasma exosomes during the window of implantation between patients with failed implantation and successful implantation. Methods We select a nested case-control population of 12 patients with implantation failure or successfully clinical pregnancy using propensity score matching. RNA was extracted from plasma and plasma exosomes collected during the window of implantation (WOI). MicroRNA expression in all samples was quantified using microRNA sequencing. The intersection of differently expressed miRNAs in plasma and exosomes were further validated in the GEO dataset. Significantly altered microRNAs in both plasma and plasma exosomes were then subjected to target prediction and KEGG pathway enrichment analyses to search for key signaling pathways. WGCNA analysis was performed to identify hub miRNAs associated with implantation. Results 13 miRNAs were differentially expressed in both plasma and plasma exosomes in patients with implantation failure. Among them, miR-150-5p, miR-150-3p, miR-149-5p, and miR-146b-3p had consistent direction changes in endometrium of patients with recurrent implantation failure (RIF), miR-342-3p had consistent direction changes in blood samples of patients with RIF. Pathway enrichment analysis showed that the target genes of differentially expressed miRNAs are enriched in pathways related to embryo implantation. WGCNA analysis indicated that miR-150-5p, miR-150-3p, miR-146b-3p, and miR-342-3p are hub miRNAs. Conclusions Implantation failure is associated with distinct miRNA profiles in plasma and plasma exosomes during WOI.

scholarly journals Doppler indices of uterine vessels in assessing the ability of endometrial implantation during in vitro fertilization (IVF) cycles

2013 ◽  
Vol 62 (4) ◽  
pp. 29-36 ◽  
Author(s):  
Alexander Mkrtichevich Gzgzyan ◽  
Dariko Aleksandrovna Niauri ◽  
Igor Yurievich Kogan ◽  
Liailia Kharryasovna Dzhemlikhanova ◽  
Inna Otarovna Krikheli ◽  
...  
Keyword(s):  
Menstrual Cycle ◽  
Embryo Transfer ◽  
Color Doppler ◽  
Embryo Implantation ◽  
Hemodynamic Parameters ◽  
Vitro Fertilization ◽  
Doppler Indices ◽  
Day Of Embryo Transfer ◽  
Uterine Vessels

Embryo implantation is a multifactorial process. IVF success depends on the quality of the embryo and the receptivity of the endometrium. Ultrasound is non-invasive method to assess the answer of the ovaries and the endometrium in IVF cycles. Color Doppler mapping of the uterine vessels provides information about the degree of vascularization of the uterus and endometrium and ready for implantation. In this article are represented characters uterine blood vessels of 28 infertile women undergoing IVF embryo transfer, followed by 2–3 days of the menstrual cycle, on the day of the trigger and the day of embryo transfer. The comparison of hemodynamic parameters (systolic-diastolic ratio S/D, index of resistance IR, pulsation index PI) of uterine vessels (uterine, arcuate, radial, basal and spiral arteries) was made in 15 pregnant and 13 non-pregnant women after IVF treatment. It was found, that the hemodynamic parameter of uterine vessels on 2–3 days of menstrual cycle does not reflect the ability of endometrium to implantation in IVF cycles. The most effective in the forecast of pregnancy was to determine the mentioned hemodynamic parameters in the basal, spiral arteries of the uterus on the day of the trigger and basal IR and spiral PI arteries on the day of embryo transfer.

UNTERSUCHUNGEN ÜBER DIE EXTRAKTION DES ROTEN KOBER-FARBSTOFFS DURCH ORGANISCHE LÖSUNGSMITTEL ZUR ÖSTROGENBESTIMMUNG IM HARN

1960 ◽  
Vol XXXV (I) ◽  
pp. 34-48 ◽  
Author(s):  
Gerd Ittrich
Keyword(s):  
Menstrual Cycle ◽  
Organic Solvents ◽  
Urine Sample ◽  
Phenol Derivatives ◽  
Organische Lösungsmittel ◽  
Colour Complex

ABSTRACT A series of organic solvents and phenol derivatives have been examined for the extraction of the pink Kober-colour complex. Optimal results could be achieved for fluorimetry by a solution of 2 % (w/v) p-nitrophenol and 1 % (v/v) ethanol in acetylenetetrabromide, when the green mercury line (546 mμ was used as primary light. The sensitivity, stability and specificity have been improved, compared with the previously described reaction. By changing the sequence of purification steps and by reducing the volume of the urine sample (5 ml) the method for the determination of total oestrogens has been simplified. Approximately 10 determinations can be done within 3–4 hours by one person. Recovery experiments and comparative determinations with a previously described method have been carried out. The excretion of total oestrogens in a complete menstrual cycle is determined with the described method.

Effectiveness of zona pellucida protein ZPB as an immunocontraceptive antigen

Reproduction ◽  
2000 ◽  
pp. 19-32 ◽  
Author(s):  
ML Martinez ◽  
JD Harris
Keyword(s):  
Menstrual Cycle ◽  
Recombinant Protein ◽  
Antibody Titre ◽  
Zona Pellucida ◽  
Protein A ◽  
Papio Cynocephalus ◽  
Cynomolgus Monkeys ◽  
Menstrual Cycles ◽  
Normal Menstrual Cycle

Immunization of female mammals with native zona pellucida (ZP) proteins is known to cause infertility. Since each human ZP protein is now available as a purified recombinant protein, is it possible to compare the immunocontraceptive potential of each ZP protein. A breeding study was conducted in cynomolgus monkeys (Macaca fasicularis) after immunization with recombinant human ZP (rhZP) proteins (ZPA, ZPB, ZPC) separately and in combinations. This study demonstrated that immunization with recombinant human ZPB (rhZPB) protein caused cynomolgus monkeys to become infertile for 9-35 months. A second study was conducted in baboons (Papio cynocephalus), which yielded a similar result. The baboons immunized with rhZPB became infertile for 9 to > 20 months. During the time of maximum antibody titre, some animals experienced disruption of the menstrual cycle, but eventually all of the animals resumed normal menstrual cycles. Control animals and animals immunized with other rhZP proteins all became pregnant before any of the rhZPB-treated animals. This is the first study in which a recombinant ZP protein has consistently induced infertility in a primate without permanent disruption of the normal menstrual cycle.

02 / Single and double embryo transfer provide similar live birth rates in frozen cycles

2018 ◽  
Author(s):  
Racca Annalisa ◽  
Panagiotis Drakopoulos ◽  
Samuel dos Santos Ribeiro ◽  
Christophe Blockeel
Keyword(s):  
Embryo Transfer ◽  
Live Birth ◽  
Birth Rates ◽  
Live Birth Rates ◽  
Double Embryo Transfer

THE EFFECT OF ASSISTED HATCHING IN FROZEN-THAWED EMBRYO TRANSFER CYCLES

2016 ◽  
pp. 80-84
Author(s):  
Thi Tam An Nguyen ◽  
Minh Tam Le ◽  
Ngoc Thanh Cao
Keyword(s):  
Embryo Transfer ◽  
Zona Pellucida ◽  
Assisted Hatching ◽  
Implantation Failure ◽  
Multiple Pregnancies ◽  
Recurrent Implantation Failure ◽  
Key Words Laser ◽  
Implantation And Pregnancy Rates ◽  
Frozen Thawed Embryo Transfer ◽  
Thawed Embryo Transfer

Background: Laser assisted hatching technique based on the hypothesis to make an artificial hole on zona pellucida (ZP) that can help embryo hatching out of ZP easily. This technique has been shown to increase implantation and pregnancy rates in women of advanced age, in women with recurrent implantation failure and following the transfer of frozen–thawed embryos. This study described the outcome of frozen–thawed embryo transfers with laser assisted hatching (LAH), which is one of the safest method in nowadays. Purpose: To assess the effect of assisted hatching technique on the clinical outcomes in vitrified-warmed transfer cycles. Method: A total of 65 thawed-transfer cycles with 153 thawed-embryos undertaken within a 12-month period were analysed, Assisted hatching with laser zona thinning was performed with one-quarter of the zona pellucida circumference. The overall thawed-embryos (day 3) were kept in culture overnight. Patient were prepared the suitable endometrium and transferred embryos advantageously. Results: In which, having the rate of survival embryos were 143 occupying 94.3%, the percentage of grade 1 and 2 embryos occupied 55.9% and 29,3% respectively, and that were enrolled LAH before transfering of frozen–thawed embryos. The average transferred embryos were 2.4±0.8, The rate of implantation per transferred embryos and per transferred embryos cycles was 19.5% and 43.1% respectively. The rate of clinical pregnancies per embryo transfer cycles occupied 33.8% with percentage of early miscarriages (biochemical pregnancies and early clinical miscarriages) was 12.3%. The rate of ongoing pregnancies was 30.8% and multiple pregnancies was low just 12.3%. This result was equal or higher than other researchs in embryos transfer had or no LAH. Conclusion: LAH contributed to stable frozen–thawed embryos transfer effectiveness. Key words: Laser assisted hatching, frozen–thawed embryos transfer, zona pellucida (ZP)

Comparison of pregnancy rates in favorable prognosis women receiving an elective single or double embryo transfer

2009 ◽  
Vol 92 (3) ◽  
pp. S246-S247
Author(s):  
A.A. Shitta-Bey ◽  
G. Kovalevsky ◽  
S.M. Carney ◽  
M.P. Portman ◽  
L.S. Morrison ◽  
...  
Keyword(s):  
Embryo Transfer ◽  
Pregnancy Rates ◽  
Favorable Prognosis ◽  
Double Embryo Transfer
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